Engine



1. HALTENBERGER.

ENGINE.

APPLICATION FILED lN[)V.22, I920.

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UNITED STATES JULES IIAI."1ENBERGER7 0F INDIANAPOLIS, INDIANA.

ENGINE.

Specification of Letters Patent.

Patented Mar. 14, `1922.

Application filed November 22, 1920. Serial No. 425,597.

T 0 all whom t may concern Be it known that I, JULES HALTENBERGER.

- who am a citizen of the city of Kassa, Kai

the radial. type, to avoid the necessity for` any separate cam shaft andeliminate all gearing and gear noise in such mechanism, and to provideround surfaces for the interengaging relatively movable parts of thevalve-operating mechanism.

The accompanying drawing illustrates my invention: Fig. 1 is an endelevation of a three-cylinder radial-type internal combustion engineembodying my invention, with two of the cylinders and part of thecrankcase broken away; Fig. 2 is a side elevation of such engine, withthe lower part broken away, and in partial section at the crankshaft;and Fig. 3 is a section on the line 3--3 of Fig. 1.

The engine shown has a plurality o1 radial cylinders 10, suitably boltedto a central crank-case 11, in which is mounted a crank-shaft 12provided with the usual flywheel 13. The pistons in the severalcylinders are connected by the usual connecting rods 14 to thecrank-shaft 12, which has a number of cranks corresponding to the numberof planes in which the cylinders are arranged transverse to thecrank-shaft, as shown, the crank-shaft has but a single crank, as thereis an odd number ot cylin ders and so they are all arranged in a singleplane transverse to the crank-shaft. Though the engine shownV has threecylinders, any desired number oi cylinders may be used. The structure asso far described is wellknown. Y

Each cylinder 10 is provided at its outer end with an inlet valve 20 andwith an exhaust valve 21, shown'as of the Voverhead type, and each ofthese valves co-operates with one end of a rocker arm 22 pivotallymounted at an intermediate point on a suitable support 23 carried by thecylinder. The valves may be all alike, and the rocker arms may be allalike, so that they are interchangeable, The other end of each rockerarm 22 co-operates with the outer end of a push rod 24, convenientlythrough an adj listing screw 25 which may be provided on the rocker arm.The push rods 24 are all alike, so that they are interchangeable. Theouter ends of these push rods 21 are all in the same plane transverse tothe crank-shaft when the cylinders 10 are all in a single plane, and theouter ends of the two rods for each cylinder are spaced apart in suchplane, as is clear from Fig. 1; the push rods for each cylinder lie inplanes parallel to and on opposite sides of the plane of that cylinderand ot the crank-shaft, and preferably the inner ends of the push rodsfor each cylinder lie on opposite sides of the transverse plane or' theouter ends of such rod, and are spaced from such transverse plane byequal distances, as is clear from Figs. 2 and 3. This arrangementpermits the valve rods to be all alike and therefore interchangeable.

The inner ends of the push rods abut against the outer ends of twoparallel tappet rods 2T rotatably and slidably mounted in suitable guideholes 26 in the crank-case 11; the push rods or the tappets are suitablycupped to receive the other at their interengaging ends. The tappets 27and the holes 26 are round where theyV fit together, so that they mayreadily be machined. Vithin the crank-case, each tappet has a crankarm29, in the free end of which is swiveled a pin 3() carrying a roller 28.The two pins 30 for each cylinder preferably lie substantially in theplane of the axes of said cylinder and of the crank-shaft.

In the crank-shaft 12 are two grooves 35 and 36, one of which receivesthe rollers 28 for all the inlet valves and the other the Vrollers 28for all the exhaust valves. Each groove 35 and 36 is a twin ortwo-revolution groove, comprising two axially separated parts extendingalmost completely around the crank shaft in a single plane transverse tothe crank-shaft axis, and an X-shaped crossover part interconnectingsaid two axially separated parts. As the crank shaft rotates, any oneroller completely traverses its groove in two revolutions of the crankshaft, to give the desired valve movement for a four-cycle engine, theroller traveling first in one of the axially separated portions and thenpassing by the crossover to the other portion, a liter traveling whichit returns by the crossover to the first portion. rhebottoni ot thecrossover and ot one of the axiallyv separated portions oi' each grooveis wholly cylindrical, but that ot the other of ysaid axially separatedportions is provided with a cam nose which littsaud lowers the roller 28and .therethrough opens and closes the associated. valve.l This openingand closing movement of the valve is obtained wholly while the roller 28is fout of the crossover part ot the groove.

y As each roller 28 travels` its groove, it is given three motions, andits tappet is given two motions. The cam nose in the bottom of `thegroove littsand lowers the roller and the tappet, and therethroughraises and lowers the associated valve, the round part ot thetappetQT-sliding longitudinally within the hole 2611s required for suchmovement; the Side walls olvthe groove guide the roller, .both turningit and moving it longitudinally of the crank-shaft,V thus causing'boththeV swiveled pin 30 to turn in the crank-arm 29 and the round part ofthe tappet 27 to turn' inthe hole 26. These motions are all permitted bythe tappet and roller mounting.

Not only arethe valves, the rocker arms, Y

land the push rodsiinterchangeable, but so are the tappets; so that theentire valveoperating Y mechanism is interchangeable o throughout.

l. claim as my invention: Y

1. Inaninternal combustion engine, the -combination of a crank-shaftprovided in its outer surface with a vtwo-revolution cam-operating pathof which the'two parts are connected by ya crossover, a tappet mountedon one side of theplane of the crank-shaft and of theengine cylinderassociated with such tappct .and both rotatable and longitudinally,slidable, and means connecting the outer end ot said tappet with anengine valve to operate the latter upon longitudinal movement of saidtappet, said tappet having a crank-armY which at-itsflree end has meansco-operating with said'path,` the pointwhere .said last-namedmeans-fengages said path kbeing substantially in the :aforesaid plane.

2. 4In an internal-combustion engine, the combination otra crank-shaftprovided in its outer surface with :a two-revolution eam operatingpathof which the twoparts are connectedV by'a crossover, aA tappet mounted;onone side of the VVplane of the crank-shaft and/ofthe engine cylinderassociated with 'such tappet andrboth rotatable and longitudinally-slidable, means connecting the louter end ot- 'said tappet with anVengine valveto operatethe latter upon longitudi-V nal movementot -saidtappet, said tappet having a crank-alainV andmeans having :a

' said path.

swivel mounting in the Ytree end of said crank-arm'and co-operating withsaid path, the pointwhere said'last-named means engages said path beingsubstantially in the I aforesaid plane.

In an internal combustionl engine, the

combination of a crank-shatt'provided in its outer surface with atwo-revolution cam-op, erating path of which the two parts are connectedby a. crossover, a tappet both rotat able and longitudinally slidable,and means combination ota crank-shaftsprovided in its outer surface witha two-revolution camopcrating path ot which the two parts are connectedby a crossover', a tappet both rotatable and longitudinally 'slidable,and means connecting the outer end oit said tappet with an engine valveto Yoperate the latter upon longitudinal movement of said tappet, saidtappetjhaving a crank-arm, and means having a swivel mountingin the treeend ofesaid crank-army and (3o-operating with 5. In an internalcombination of acranlr-shatt provided Vin its outersurface with atwo-revolution Vcamoperating path ot which the'two parts are connectedby a crossover, a tappet mounted on one side of the plane ot thecrank-shaft and of the` engine cylinder associated with such tappet Vandboth rotatable and longitu-` dinally slidable, means connectingthe outerend oi" said tappet with an engine valve to operate the latter uponlongitudinal moven ment ot' said tappet, said tappet having a.crank-arm, VHand a roller; having a swivel mountingfin the treeY end otsaid crank-arm andwin such plane and co-operating with Vsaid path, the.point where said'last-named means engages said path Vbeingsubstantially in the aforesaid plane.

`6. lnV anV internal ycombustion engine, the

combination of a vcrank-shaft providedfin its cuter surface with latwo-revolution camoperating path Yof which thetwo parts are connected bya crossover, Aa tappet both rotatable and longitudinally slidable, meansconnecting the outer end'or" said tap'pet with anengine valve toroperatethelatter upon longitudinal movement of said tappet, said tappet havinga crank-arm, andV a roller having a swivel mounting in the tree end ofsaid combustion engine, the v crank-arm and co-operating with said path.

ln witness whereof, have hereuntoset" my hand at ndianapol1slndiana,this ith" day of'November,'A.,D. one thousand nine Y hundred and twent YY Y y, JULES Il ALTENBERGER.

